From: Charles Manning <manningc2@actrix.gen.nz>
To: "Dave Korn" <dave.korn@artimi.com>,
"'Alan Modra'" <amodra@bigpond.net.au>
Cc: <binutils@sources.redhat.com>
Subject: Re: Why no expressions in MEMORY command?
Date: Tue, 12 Apr 2005 21:47:00 -0000 [thread overview]
Message-ID: <20050412214702.EBB9A453F@blood.actrix.co.nz> (raw)
In-Reply-To: <SERRANORmzeyNtqMk7L000000ef@SERRANO.CAM.ARTIMI.COM>
> > Because no one has cared enough to write support to handle such symbols
> > in linker scripts.
Maybe I care enough to have a crack at this:-)
>
> FYI: I looked into it in some depth once; it would require quite a hefty
> bit of patching, since the information about symbol values isn't evaulated
> yet at the time the parser is reading the MEMORY command. See PR ld/518
> http://sourceware.org/bugzilla/show_bug.cgi?id=518, also see
> http://sources.redhat.com/ml/binutils/2004-03/msg00540.html
> for a detailed analysis, and
> http://sources.redhat.com/ml/binutils/2004-03/msg00571.html
> for a suggested solution.
Hmmm bummer. It seems to come down to there being no distinction between
expressions that can be evaluated before symbols are produced and others.
This makes the MEMORY stuff relatively limitied in its utility. There are
work arounds, but they are far from elegant.
-- Charles
next prev parent reply other threads:[~2005-04-12 21:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-12 3:41 Charles Manning
2005-04-12 8:40 ` Alan Modra
2005-04-12 13:02 ` Dave Korn
2005-04-12 20:22 ` Linus Nielsen Feltzing
2005-04-12 21:47 ` Charles Manning [this message]
2005-04-13 23:30 ` Peter Barada
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